Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8bb55fc5b8b502c538a4ef428d6a5c3a188c67109aa0c57c7e4f0be168dc5928' 
  AND token = 'Jy/3sAAsmBr0g3QJdxvG7I7pARkBEWSlEQUuD5g6Wtg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}